About 12 percent of Louisiana residents who identify themselves as white have at least 1 percent African ancestry, or one African ancestor within the last 11 generations, according to a new report.

Louisiana, along with South Carolina, is far above the average for that statistic, which is about 10 percent throughout the South, and 3.5 percent nationwide.

Researchers came to that conclusion by analyzing genetic records of about 145,000 people from genetic testing company 23andme. You can see the full study, which was also cited by the Washington Post and Vox, in the American Journal of Human Genetics here.

The report says, in Louisiana, "high levels of African ancestry in European Americans are consistent with historical accounts of intermarriage in the New Orleans area."

The average African-American person nationwide has about 24 percent European ancestry, the report says. Interestingly, the report also looks at the gender of those European ancestors - about 5 percent of the ancestors of African Americans were European females, and 19 percent were European males. Vox points out that disparity is likely connected to male slave owners who raped enslaved women from Africa.